Kaio remained in sole possession of the lead Friday after a hard-fought win over fellow ozeki Chiyotaikai, while yokozuna Asashoryu was upset again at the Autumn Grand Sumo Tournament.

News photoSekiwake Wakanosato throws down yokozuna Asashoryu during 13th-day action on Friday at Tokyo's Ryogoku Kokugikan. Wakanosato improved his record to 10-3 while Asashoryu fell back to 9-4.

Chiyotaikai, who was handed his fourth straight loss of the 15-day tourney, went on the attack in the penultimate bout at Tokyo's Ryogoku Kokugikan with a barrage of arm thrusts.